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From "Till (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ASTERIXDB-1612) Shutdown of *DB cluster leaves threads running
Date Sat, 27 Aug 2016 06:42:21 GMT

    [ https://issues.apache.org/jira/browse/ASTERIXDB-1612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15440851#comment-15440851
] 

Till commented on ASTERIXDB-1612:
---------------------------------

And it's very interesting to see that on the Hyracks adminconsole.

> Shutdown of *DB cluster leaves threads running
> ----------------------------------------------
>
>                 Key: ASTERIXDB-1612
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-1612
>             Project: Apache AsterixDB
>          Issue Type: Bug
>          Components: AsterixDB, Test Framework
>            Reporter: Michael Blow
>
> When a cluster is started using AsterixHyracksIntegrationUtil and subsequently shut down
without terminating the VM, a number of *DB threads remain active.
> "Thread-176" #237 prio=5 os_prio=31 tid=0x00007f962acb0000 nid=0x1cc07 waiting on condition
[0x00007000069ce000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d608> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "Thread-175" #236 prio=5 os_prio=31 tid=0x00007f962acb2000 nid=0x11207 waiting on condition
[0x00007000068cb000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d6f0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "TCPEndpoint IO Thread" #222 daemon prio=5 os_prio=31 tid=0x00007f962a503800 nid=0x1aa07
runnable [0x000070000c079000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x00000007071582d0> (a sun.nio.ch.Util$2)
> 	- locked <0x00000007071582e0> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000707158280> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.net.protocols.tcp.TCPEndpoint$IOThread.run(TCPEndpoint.java:121)
> "IPC Network Listener Thread" #221 daemon prio=10 os_prio=31 tid=0x00007f962b02a000 nid=0x1a507
runnable [0x000070000bc17000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000707158478> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000707158488> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x000000070702ffa8> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "Thread-70" #111 prio=5 os_prio=31 tid=0x00007f9627b52000 nid=0x11a03 waiting on condition
[0x00007000075f2000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d608> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "Thread-65" #106 prio=5 os_prio=31 tid=0x00007f962421f800 nid=0x11403 waiting on condition
[0x00007000073ec000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d6f0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "TCPEndpoint IO Thread" #100 daemon prio=5 os_prio=31 tid=0x00007f9627b4b800 nid=0x10003
runnable [0x0000700006bd4000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702c40a40> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702c40a50> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702c409f0> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.net.protocols.tcp.TCPEndpoint$IOThread.run(TCPEndpoint.java:121)
> "TCPEndpoint IO Thread" #99 daemon prio=5 os_prio=31 tid=0x00007f9624a67000 nid=0xfe03
runnable [0x0000700006ad1000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702c40f78> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702c40f88> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702c40f28> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.net.protocols.tcp.TCPEndpoint$IOThread.run(TCPEndpoint.java:121)
> "Thread-55" #92 prio=5 os_prio=31 tid=0x00007f9624a7d800 nid=0xf003 waiting on condition
[0x00007000063bc000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d6f0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "Thread-56" #91 prio=5 os_prio=31 tid=0x00007f962422e000 nid=0xee03 waiting on condition
[0x00007000062b9000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x000000070299d608> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.transaction.management.service.logging.LogManager$FlushLogsLogger.run(LogManager.java:602)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "TCPEndpoint IO Thread" #85 daemon prio=5 os_prio=31 tid=0x00007f9627b48000 nid=0xe803
runnable [0x0000700005fb0000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000701e5c9e8> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000701e5c9d8> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000701e5c988> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.net.protocols.tcp.TCPEndpoint$IOThread.run(TCPEndpoint.java:121)
> "TCPEndpoint IO Thread" #86 daemon prio=5 os_prio=31 tid=0x00007f96273e5000 nid=0xe603
runnable [0x0000700005ead000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702ddb3b8> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702ddb3c8> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702ddb368> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.net.protocols.tcp.TCPEndpoint$IOThread.run(TCPEndpoint.java:121)
> "IPC Network Listener Thread" #84 daemon prio=10 os_prio=31 tid=0x00007f962690e800 nid=0xe403
runnable [0x0000700005daa000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702c43990> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702c439a0> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702c43940> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #80 daemon prio=10 os_prio=31 tid=0x00007f96273e2000 nid=0xe203
runnable [0x0000700005ca7000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702ddb8f0> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702ddb900> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702ddb8a0> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #76 daemon prio=10 os_prio=31 tid=0x00007f9624a3a000 nid=0xdc03
runnable [0x000070000599e000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000702bb8380> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000702bb8370> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000702bb7c30> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "Thread-43" #74 prio=5 os_prio=31 tid=0x00007f96241b4800 nid=0xd203 waiting on condition
[0x000070000548f000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x0000000703070360> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.hyracks.bootstrap.ClusterWorkExecutor.run(ClusterWorkExecutor.java:49)
> 	at java.lang.Thread.run(Thread.java:745)
> "IPC Network Listener Thread" #37 daemon prio=10 os_prio=31 tid=0x00007f9624a28800 nid=0x8803
runnable [0x0000700002f20000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x00000007010faab8> (a sun.nio.ch.Util$2)
> 	- locked <0x00000007010faac8> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x000000070268d798> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #36 daemon prio=10 os_prio=31 tid=0x00007f9624a27800 nid=0x8603
runnable [0x0000700002e1d000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x00000007010fab88> (a sun.nio.ch.Util$2)
> 	- locked <0x00000007010fab98> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x00000007022dc488> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #35 daemon prio=10 os_prio=31 tid=0x00007f9628322800 nid=0x8403
runnable [0x0000700002d1a000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x00000007010fac58> (a sun.nio.ch.Util$2)
> 	- locked <0x00000007010fac68> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000701e621f0> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #34 daemon prio=10 os_prio=31 tid=0x00007f9624196000 nid=0x8203
runnable [0x0000700002c17000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x00000007010fad28> (a sun.nio.ch.Util$2)
> 	- locked <0x00000007010fad38> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x00000007022dbd40> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "ActiveJobNotificationHandler" #33 prio=5 os_prio=31 tid=0x00007f9624195000 nid=0x8003
waiting on condition [0x0000700002b14000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x00000007010fadd0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> 	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> 	at org.apache.asterix.active.ActiveJobNotificationHandler.run(ActiveJobNotificationHandler.java:53)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> "IPC Network Listener Thread" #29 daemon prio=10 os_prio=31 tid=0x00007f96241a8000 nid=0x7803
runnable [0x0000700002708000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000700187de0> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000700187df0> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000700187d90> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #28 daemon prio=10 os_prio=31 tid=0x00007f96241a3000 nid=0x7603
runnable [0x0000700002605000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000700187ea8> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000700187eb8> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000700187e58> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #15 daemon prio=10 os_prio=31 tid=0x00007f96241db800 nid=0x6003
runnable [0x0000700001ae4000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000700188af8> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000700188b08> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x000000070042a268> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)
> "IPC Network Listener Thread" #14 daemon prio=10 os_prio=31 tid=0x00007f96241da800 nid=0x5e03
runnable [0x00007000019e1000]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
> 	at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
> 	at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
> 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> 	- locked <0x0000000700429cb0> (a sun.nio.ch.Util$2)
> 	- locked <0x0000000700429ca0> (a java.util.Collections$UnmodifiableSet)
> 	- locked <0x0000000700429b00> (a sun.nio.ch.KQueueSelectorImpl)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> 	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> 	at org.apache.hyracks.ipc.impl.IPCConnectionManager$NetworkThread.run(IPCConnectionManager.java:200)



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